US2626898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing alkali metal greases
Assignee: Texaco Inc
•
Filing: 1950-10-26
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Granted: 1953-01-27
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Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 John P Dilworth
- 👤 George W Eckert
- 👤 William J Coppoc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:12
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/06; C10M2201/063; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2219/00; C10M2219/04; C10M2219/044; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/06; C10N2050/00; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR PREPARING ALAKLI METAL GREASES WHICH COMPRISES SAPONIFYING A MIXTURE OF A MINERAL LUBRICATING OIL FRACTION, AN AQUEOUS SOLUTION OF ALKALI METAL HYDROXIDE AND A SOAP-FORMING MATERIAL SELECTED FROM THE GROUP CONSISTING OF SOAP-FORMING ACIDS, SOAP-FORMING ESTERS AND MIXTURES THEREOF, SAID ALKALI METAL HYDROXIDE BEING IN EXCESS OF THE STOICHIOMETRIC AMOUNT REQUIRED FOR SAPONIFICATION OF SAID SOAP-FORMING MATERIAL, DEHYDRATING SAID MIXTURE AND DIGESTING SAID SAPONIFIED AND DEHYDRATED REACTION MASS AT AN ELEVATED TEMPERATURE OF 300 TO 390* F., AT AN AIR PRESSURE OF 50 TO 120 POUNDS PER SQUARE INCH FOR A PERIOD OF AT LEAST FIVE HOURS, COOLING AND DRAWING SAID REACTION MIXTURE.
Claim 2
Dependent Claim
106 words
A PROCESS FOR PREPARING ALAKLI METAL GREASES WHICH COMPRISES SAPONIFYING A MIXTURE OF A MINERAL LUBRICATING OIL FRACTION, AN AQUEOUS SOLUTION OF ALKALI METAL HYDROXIDE AND A SOAP-FORMING MATERIAL SELECTED FROM THE GROUP CONSISTING OF SOAP-FORMING ACIDS, SOAP-FORMING ESTERS AND MIXTURES THEREOF, SAID ALKALI METAL HYDROXIDE BEING IN EXCESS OF THE STOICHIOMETRIC AMOUNT REQUIRED FOR SAPONIFICATION OF SAID SOAP-FORMING MATERIAL, DEHYDRATING SAID MIXTURE AND DIGESTING SAID SAPONIFIED AND DEHYDRATED REACTION MASS AT AN ELEVATED TEMPERATURE OF 300 TO 390* F., AT AN AIR PRESSURE OF 50 TO 120 POUNDS PER SQUARE INCH FOR A PERIOD OF AT LEAST FIVE HOURS, COOLING AND DRAWING SAID REACTION MIXTURE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |